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i found the problem, i change the o2 sensor and the problem gone.

I tune the maf with afr error, i clean the maf and helps a little, yes the baro is correct a live at 6670 feet over the sea. So you think the maf can be the problem?

Hi, some days ago i see my ltft+stft are to high, and have a really bad knocks, i believe i have problems whit maf sensor or o2 sensor. here is my logs and my configuration files. thanks in advance....

yes its the stock tune white little changes, just more fuel and spark tables

i have some knocks when i start to drive, what could it be?, bad AFR?
this is my tune and log.
thanks in advance.585135851458515

ok thanks for your time and info

ok, or you have a gm stage 2 or zzp because i dont know if the repository stage 2 tune is the correct tune

ok thanks for all infomation, can i use the stock tune for now?

its everything ok?

this is my last log and my tune5764457645

can iat boost cause that? because is a 90%

hi, im running stage 2 tune from repository, i have 2.9 pulley with overzised tensioner and i only see 12 psi of boost, can be the tune? i live at 6600 feet above the sea. thanks in advance

thanks man, sombeody knows what i need to change when i have a injen intake, on zzp page said whit 1.0 ecu have a different calibration on maf sensor

yes im using the stock map sensor, 9 to 10 psi

i cant find any boost leaks,54818 this is my current config file

hi im running a 3.1 zzp pulley, whit stage 2 file and stock injectors, im only see 12 psi of boost, i live at 6627 feet over the sea this is normal?
i added 4 degrees to high octane table whit no...

i have 07 ss/sc

hi i need a stock gm o zzp stage 2 file, someone?

yes im sorry for that its torque management, 91 octane

im sorry this is my tune52888

yes factory gm tune only disable all traction control tables, and 7000 rpms mod

i have some knocks on my cobalt, i need help whith that, its stock only have injen intake
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i need help, i want to made a 3.1 pulley on cnc machine but i need all the measures of 3.1 pulley and the hub.
someone can take the measures of your pulley please.